Is "permanent residency" the same thing as "green card?"

[kimberlywrites]

What is the name of your state? TX
If you receive permanent residency, is that the same thing as saying you're getting a green card?
If permanent residency (or greencard) is obtainted from an L1 and L2 visa holder, does the L2 visa holder still need to apply for an EAD (employment authorization document) - or does the permanent residency status make it okay to live/work wherever in the US?

 

[yandresyuk]

Those 2 are exactly the same thing, Green card is a simple way of saying "permanent resident card"